I am transitioning to a hackamore. I have to get Sam's teeth floated and until I do I don't want to ride him with a bit. Sad to say, it took me several weeks of bit experimenting before I could fully confirm he needed to have them floated. During that time I moved him from one bit style to another trying to find a comfortable bit for him. He was constantly shaking his head and his tongue was hanging out.
After several weeks of putting fingers into his mouth we were finally able to confirm it was teeth and not behavioral.
I explained all that because Sunday was his first time in the hackamore and he was completely reversed. He was a participant during the training and kept his mouth shut tongue inside his mouth the entire training session.
I could tell he was engaging in the training and even his gait felt smoother.
Frankly, up until I read the posting about Mechanical Hackamore's and the dangers they present, I was thinking I would not move back to a bit after his teeth are floated.
The postings in that thread scurred me.
It will be interesting to find out where I end up. I like the ease with putting the hackamore on. I always thought a bitless bridle was more humane, but after some of the postings on this subject it appears to be quite the opposite.